I did go back and read the rest of it, and I do agree that it's pretty good overall. For someone going into detail about the mistaken capitalization of a variable name (which I appreciated), the "one day" bit still stands out as oddly hand-wavy and boastful (and, as the opening remark, I would argue it's pretty important for setting the tone).

If that point needed to be made (and I don't think it really did in this article, that's not the focus), it could have been done more carefully.